The principles of comparative cortical cytoarchitectonics.- The basic laminar pattern of the cerebral cortex.- Regional variations in cell structure of the cerebral cortex.- Particularities of the cytoarchitecture in different animals.- The principles of comparative field organisation in the cerebral cortex.- Description of individual brain maps.- Common features in cortical architectonics.- Variations in cortical architectonics.- Synthesis: Hypothesis of the cortex as a morphological, physiological and pathological organ.- Histological cortical localisation in relation to morphology.- Localisation and histopathology.- Physiology of the cortex as an organ.